Patent US4900877A successfully refreshed from Google Patents.
US4900877A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shielding and sealing gaskets
Assignee: TE Connectivity Corp
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Filing: 1988-07-12
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Granted: 1990-02-13
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Expires: 2008-07-12
Abstract
Abstract This invention provides E.M.I. gaskets for electrically shielding and environmentally sealing the space between two surfaces which comprises a metallic electrically conductive deformable structure adapted for forming electrical contact with said surfaces and/or providing electrical shielding in the space between said surfaces; and a gel material for sealing the space between said surfaces having a cone penetration value of about 100 to about 350 (10 -1 mm) and an ultimate elongation of at least 200% and being present in sufficient amount and positioned to provide environmental seal between said surfaces and to provide environmental protection for said metallic structure. The gel may encapsulate the entire metallic structure so that portions of the metallic structure pierces through the gel when the gasket is installed to make electrical contact. Alternatively portions of the metallic structure may extend beyond the surface of the gel and the gel deforms to cover exposed portions of the metallic structure when the gasket is installed. The gasket of this invention provides moisture seal and is resistant to corrosion.
Inventors
- 👤 Robert S. Dubrow
- 👤 Christine J. Holland
- 👤 Randolph W. Chan
- 👤 Albert R. Martin
- 👤 Dennis C. Siden
- 👤 Paul B. Germeraad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:21
CPC Classifications
H; H05; H05K; H05K9/00; H05K9/0007; H05K9/0015
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
155 words
An E.M.I. gasket for electrically shielding and environmentally sealing the space between two surfaces comprising: (a) a metallic electrically conductive deformable structure adapted for forming electrical contact with said surfaces and for providing electrical shielding in the space between said surfaces; and (b) a gel material for sealing the space between said surfaces having a cone penetration value of about 100 to about 350 (10 -1 mm) and an ultimate elongation of at least 200% and being present in sufficient amount and positioned to provide an environmental seal between said surfaces and to provide environmental protection to said metallic structure; wherein at least a portion of the metallic structure is positioned and exposed outside the gel material and the gel material is positioned so as to deform into sealing contact with the surfaces and deform around the metallic structure to seal exposed portions of the metallic structure when the gasket is compressed between the surfaces.
Claim 2
Dependent Claim
155 words
An E.M.I. gasket for electrically shielding and environmentally sealing the space between two surfaces comprising: (a) a metallic electrically conductive deformable structure adapted for forming electrical contact with said surfaces and for providing electrical shielding in the space between said surfaces; and (b) a gel material for sealing the space between said surfaces having a cone penetration value of about 100 to about 350 (10 -1 mm) and an ultimate elongation of at least 200% and being present in sufficient amount and positioned to provide an environmental seal between said surfaces and to provide environmental protection to said metallic structure; wherein at least a portion of the metallic structure is positioned and exposed outside the gel material and the gel material is positioned so as to deform into sealing contact with the surfaces and deform around the metallic structure to seal exposed portions of the metallic structure when the gasket is compressed between the surfaces.
Claim 3
Dependent Claim
48 words
A method of providing E.M.I. shielding and environmental sealing between two surfaces by positioning a gasket as defined in claim 1 between said two surfaces and compressing said gasket between said surfaces to deform the gel material and establish electrical contact of the metallic structure with said surfaces.
Claim 4
Dependent Claim
17 words
An assembly comprising two surfaces and a gasket as defined in claim 1 compressed between said surfaces.
Claim 5
Dependent Claim
14 words
A gasket according to claim 1, wherein the metallic structure is a knitted structure.
Claim 6
Dependent Claim
15 words
A gasket according to claim 1, wherein the metallic structure is an expanded metal mesh.
Claim 7
Dependent Claim
14 words
A gasket according to claim 1, wherein the metallic structure is a non-woven fabric.
Claim 8
Dependent Claim
139 words
An E.M.I. gasket for electrically shielding and environmentally sealing the space between two surfaces comprising: (a) a metallic electrically conductive deformable structure adapted for forming electrical contact with said surfaces and for providing electrical shielding in the space between said surfaces; and (b) a gel material for sealing the space between said surfaces having a cone penetration value of about 100 to about 350 (10 -1 mm) and an ultimate elongation of at least 200% and being present in sufficient amount and positioned to provide an environmental seal between said surfaces and to provide environmental protection to said metallic structure; wherein the gel material covers the metallic structure and the metallic structure is adapted and positioned such that when the gasket is compressed between the surfaces, portions of said structure pierce through the gel material and contact the surfaces.
Claim 9
Dependent Claim
139 words
An E.M.I. gasket for electrically shielding and environmentally sealing the space between two surfaces comprising: (a) a metallic electrically conductive deformable structure adapted for forming electrical contact with said surfaces and for providing electrical shielding in the space between said surfaces; and (b) a gel material for sealing the space between said surfaces having a cone penetration value of about 100 to about 350 (10 -1 mm) and an ultimate elongation of at least 200% and being present in sufficient amount and positioned to provide an environmental seal between said surfaces and to provide environmental protection to said metallic structure; wherein the gel material covers the metallic structure and the metallic structure is adapted and positioned such that when the gasket is compressed between the surfaces, portions of said structure pierce through the gel material and contact the surfaces.
Claim 10
Dependent Claim
48 words
A method of providing E.M.I. shielding and environmental sealing between two surfaces by positioning a gasket as defined in claim 7 between said two surfaces and compressing said gasket between said surfaces to deform the gel material and establish electrical contact of the metallic structure with said surfaces.
Claim 11
Dependent Claim
17 words
An assembly comprising two surfaces and a gasket as defined in claim 7 compressed between said surfaces.
Claim 12
Dependent Claim
14 words
A gasket according to claim 7, wherein the metallic structure is a knitted structure.
Claim 13
Dependent Claim
15 words
A gasket according to claim 7, wherein the metallic structure is an expanded metal mesh.
Claim 14
Dependent Claim
14 words
A gasket according to claim 7, wherein the metallic structure is a non-woven fabric.
References Cited (Backward Citations)
US3126440A
Cited
US2477267A
Cited
US2885459A
Cited
US3026367A
Cited
US3019281A
Cited
US3230294A
Cited
US3431348A
Cited
US3609104A
Cited
US3583930A
Cited
US3542939A
Cited
US3566064A
Cited
US3708871A
Cited
US4037009A
Cited
US4098633A
Cited
US4434541A
Cited
US4507359A
Cited
US4634207A
Cited
EP0196767A2
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-02-12 | 1993-08-14 | 1994-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-02-12 | 1997-08-14 | 1998-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-02-12 | 2001-08-14 | 2002-02-13 | $7700.00 | Window Closed / Lapsed |